Arts and Humanities Commons^™

A Finite Family Of Q-Orthogonal Polynomials And Resultants Of Chebyshev Polynomials, Jemal Emina Gishe

USF Tampa Graduate Theses and Dissertations

Two problems related to orthogonal polynomials and special functions are considered. For q greater than 1 it is known that continuous q-Jacobi polynomials are orthogonal on the imaginary axis. The first problem is to find proper normalization to form a system of polynomials that are orthogonal on the real line. By introducing a degree reducing operator and a scalar product one can show that the normalized continuous q-Jacobi polynomials satisfies an eigenvalue equation. This implies orthogonality of the normalized continuous q-Jacobi polynomials. As a byproduct, different results related to the normalized system of polynomials, such as its closed form,three-term recurrence …

Low-Power Flip-Flop Using Internal Clock Gating And Adaptive Body Bias, Jorge Alberto Galvis

USF Tampa Graduate Theses and Dissertations

This dissertation presents a new systematic approach to flip-flop design using Internal Clock Gating, (ICG), and Adaptive Body-Bias, (ABB), in order to reduce power consumption. The process requires careful transistor resizing in order to maintain signal integrity and the functionality of the flip-flop at the target frequency.A novel flip-flop architecture, based on the Transmission Gate Flip-Flop, (TGFF), which incorporated ICG and ABB techniques, was designed. This architecture was simulated intensively in order to determine under what conditions its use is appropriate. In addition, it was necessary to establish a methodology for creating a standard testbench and environment setup for the …

An Investigation Of The Effects Of Perceived Feedback Accuracy On Performance, Ashley A. Gray

USF Tampa Graduate Theses and Dissertations

This study built upon the theoretical feedback process of Ilgen, Fisher and Taylor (1979), as refined by Kinicki, Prussia, Wu, & Mckee-Ryan (2004), to contribute to a more comprehensive understanding of the mechanism underlying an individual's response to performance feedback. The feedback model implicates source credibility and the feedback-rich environment as critical elements in the process explaining recipient accuracy perceptions and responses. Thus the sign and perceived accuracy of performance feedback were investigated in a 3 x 3 (plus control) experimental design. One hundred fifty-six undergraduate students were randomly assigned to feedback conditions, in which they performed on a three-trial …

Calling All Learners: An Explanatory Integrative Research Study Of Efl Learner-Learner Corrective Feedback Patterns Within On-Line Synchronous Environments, Annmarie Gorenc Zoran

USF Tampa Graduate Theses and Dissertations

This mixed methods research study centers on learner-learner interactions; thus, contributing to the on-going investigation within negotiation and interaction, computer-mediated-communication and its role in second language learning. The specific aim was to investigate corrective feedback types, incidences, and the relationship between error and feedback type among peers within online synchronous environments in EFL classes in Slovenia, Europe. Interactional characteristics of corrective feedback with learners having a documented special need (SN) also were explored using qualitative analyses. The study encompassed 208 students that were randomly placed into 104 dyads within intact classes of Grades 7, 8, 10, and 11. There were …

Effectiveness Of Environmental Regulations: Monitoring By The Regulated Community Under Clean Water Act Industrial Stormwater Runoff Requirements, Kelly L. Gleaton

USF Tampa Graduate Theses and Dissertations

This research identified and evaluated possible uses of environmental monitoring data collected and reported by industrial facilities under the Clean Water Act requirements and determined whether the current regulatory system supported any of those uses. Federal policies and state-level policies in the United States, Florida, and California were evaluated in order to determine whether the current regulatory system supported any of the identified uses. Monitoring programs and currently available monitoring data were evaluated from Hillsborough County, Florida, and Los Angeles County, California, from the perspective of 1) the current implementation of the monitoring program, and 2) perfect implementation under full …

An Instrumental Case Study Of The Phenomenon Of Collaboration In The Process Of Improving Community College Developmental Reading And Writing Instruction, Patricia C. Gordin

USF Tampa Graduate Theses and Dissertations

Focusing upon the intersections between community college faculty and assessment professionals (e.g., institutional researchers) in improving student learning outcomes, the purpose of this study was to describe, analyze, and interpret the experiences of these professionals as they planned for and conducted student learning outcomes assessment in developmental reading, writing, and study skills courses. This instrumental case study at one particular community college in Florida investigated the roles played by these individuals within the larger college effort to develop a Quality Enhancement Plan (QEP), an essential component of a regional accreditation review. The methodology included individual interviews, a focus group interview, …

Development Of A Microsphere-Based Immunoassay For The Detection Of Igm Antibodies To West Nile Virus And St. Louis Encephalitis Virus In Sentinel Chicken Sera, Logan C. Haller

USF Tampa Graduate Theses and Dissertations

West Nile virus (WNV) and St. Louis Encephalitis (SLEV) are arthropod-borne viruses belonging to the genus Flavivirus and are classified as significant human pathogens of global epidemiological importance. Since its introduction into the United States in 1999, WNV has spread throughout most of the country and has caused major epidemics of neuroinvasive disease (Hayes and Gubler, 2005). SLEV is endemic to the United States and is maintained in an enzootic transmission cycle in Florida.The Florida Sentinel Chicken Arboviral Surveillance Network was established in 1978 following a widespread rural epidemic of SLEV in central Florida to monitor the activity of arboviruses …

A Study Of The Effects Of Completing An Instructor Effectivness Course On The Accountability Measures Of Adjunct Community College Faculty, Ivan Franklin Harber

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to determine the impact of an Instructor Effectiveness Course designed specifically to retain adjunct faculty and improve their overall success in teaching. The study also investigated the "online" and "face-to-face" groups of the Instructor Effectiveness Course and compared faculty who take this course to those who do not in order to detect any significant differences. Differences were measured through students' class grade point averages, (GPA's), and course completion rates for the three groups of faculty, as well as through the faculty performance on student evaluations. This mixed method, causal/comparative study looked at the adjunct …

Effect Of Alkalis And Sulfate On Portland Cement Systems, Mahmoud Halaweh

USF Tampa Graduate Theses and Dissertations

The effect of the sulfates and alkalis on the durability of Portland cement systems was investigated through a series of cube and prism mixes. Durability was assessed using expansion of mortar prisms and the compressive strength of mortar cubes. The study covered a large range of both alkali and sulfate contents using 5 different Portland cements. The alkali contents ranged from 0.27 to 3.8%, the sulfate content (as SO3) ranged from 2.54 to 5%. Doping was done using Terra Alba gypsum and potassium hydroxide. In addition to physical measurements, SEM, XRD, chemical analysis and heat of hydration calorimetry were used …

Towards Practical Design Of Impulse Radio Ultrawideband Systems: Parameter Estimation And Adaptation, Interference Mitigation, And Performance Analysi, Ismail Guvenc

USF Tampa Graduate Theses and Dissertations

Ultrawideband (UWB) is one of the promising technologies for future short-range high data rate communications (e.g. for wireless personal area networks) and longer range low data rate communications (e.g. wireless sensor networks).Despite its various advantages and potentials (e.g. low-cost circuitry, unlicensed reuse of licensed spectrum, precision ranging capability etc.), UWB also has its own challenges. The goal of this dissertation is to identify and address some of those challenges, and provide a framework for practical UWB transceiver design.In this dissertation, various modulation options for UWB systems are reviewed in terms of their bit error rate (BER) performances, spectral characteristics, modem …

Using Emergent Outcome Controls To Manage Dynamic Software Development, Michael Loyd Harris

USF Tampa Graduate Theses and Dissertations

Control and flexibility may appear an unlikely pair. However, I propose that effective management of dynamic environments, such as systems development under conditions of uncertainty, must still provide clear control mechanisms to manage the progress and quality of the resulting products. This dissertation presents research to understand the types of control used in the context of flexible software development processes. The dynamic capabilities extension to the resource-based view of the firm is used to understand dynamic environments. Within those environments, control theory is used to understand how activities are guided and controlled to achieve management objectives. Specifically, control theory acts …

Modulation Of Neural Plasticity By The Adamtss (A Disintegrin And Metalloproteinase With Thrombospondin Motifs), Michelle Grace Hamel

USF Tampa Graduate Theses and Dissertations

Aggregating proteoglycans (PG) bearing chondroitin sulfate (CS) side chains are well-known inhibitors of neural plasticity and associate with hyaluronan and tenascin-R to form a complex of extracellular matrix (ECM) in the central nervous system (CNS). Little is known about whether proteolytic cleavage of the core protein affects neural plasticity. Several members of the ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs) family of metalloproteinases are glutamyl-endopeptidases that cleave aggregating PGs. Our initial studies determined that neural cultures secrete a brevican-containing matrix, and that these neural cultures also produced ADAMTS4, a protease that cleaves brevican. Furthermore, this brevican-containing matrix in astrocytes …

Chemical Investigation Of Two Antarctic Invertebrates, Synoicum Adareanum (Chordata: Ascidiaceae: Enterogona:Polyclinidae) And AustrodorisKergulenensis (Molusca: Gastropoda:Nudibranchia: Dorididae), Thushara Kelum Kaviraj Diyabalanage

USF Tampa Graduate Theses and Dissertations

Synoicum adareanum is a colonial tunicate commonly found on the benthos around Palmer Station on Anvers Island, Antarctica. A comprehensive chemical investigation of the lipophilic extract of the frozen tunicates gave a new series of polyketide macrolides, palmerolides A-E and H. The structure elucidation of these compounds was accomplished by extensive NMR and mass spectral studies.The palmerolides are unusual 20-membered macrolides displaying functionality more commonly found in sponges or cyanobacteria. Palmerolide A, the major member of the group, shows significant and selective in vitro cytotoxicity against melanoma with three orders of greater sensitivity relative to other cell lines tested, in …

Linking Pretreatment Therapist Characteristics To The Therapeutic Alliance In Youth Treatment: An Examination Of Professional Burnout, Counseling Self-Efficacy And Gender Role Orientation, Jessica B. Handelsman

USF Tampa Graduate Theses and Dissertations

The present study investigated three pretreatment therapist characteristics (professional burnout, counseling self-efficacy, and gender role orientation) in relation to the therapeutic alliance within the context of youth treatment. It was hypothesized that the emotional exhaustion and depersonalization dimensions of burnout would be negatively associated with the alliance, while the personal accomplishment dimension of burnout and counseling self-efficacy would be positively associated with the alliance. In addition, it was hypothesized that androgynous therapists would have superior alliances, relative to stereotypically masculine or feminine therapists. Participants were 42 pairs of therapists and youth clients. Prior to intake, therapists completed the Maslach Burnout …

Respondent Fatigue In Self-Report Victim Surveys: Examining A Source Of Nonsampling Error From Three Perspectives, Timothy C. Hart

USF Tampa Graduate Theses and Dissertations

Survey research is a popular methodology used to gather data on a myriad of phenomena. Self-report victim surveys administered by the Federal government are used to substantially broaden our understanding of the nature and extent of crime. A potential source of nonsampling error, respondent fatigue is thought to manifest in contemporary victim surveys, as respondents become "test wise" after repeated exposure to survey instruments. Using a special longitudinal data file, the presence and influence of respondent fatigue in national self-report victim surveys is examined from three perspectives. Collectively, results provide a comprehensive look at how respondent fatigue may impact crime …

Realism, Sovereignty, And International Relations: An Examination Of Power Politics In The Age Of Globalization, Tyler Harrison

USF Tampa Graduate Theses and Dissertations

Many globalization theorists make the claim that the state, in its current Westphalian context, is no longer a viable unit of analysis in comparative politics or international relations. Globalists claim that in the wake of unprecedented, global integration, the state is either in retreat or on the verge of full scale extinction. In a general sense, this paper explores whether there is a sufficient amount of evidence to supports the claims of globalists that the state is dying. Moreover, the paper looks at the specific issue areas of international trade, multilateralism and the environment to determine what effects globalization has …

Confronting College: Foster Care Youth Deciding Whether To Participate In Higher Education Programs, Linda K. Herlocker

USF Tampa Graduate Theses and Dissertations

This study's purpose was to explore the college choice process for foster care youth who are aging out of Florida's protective services system. The research methodology included three components. First, a survey of the Independent Living Coordinators throughout the state of Florida solicited data regarding participation rates and enrollment patterns among foster care youth. Next, in a meeting setting, a survey was administered to foster care youth, probing the extent to which they considered certain college choice decision factors. Finally, upon completion of the survey, participants remained for a guided focus group discussion to further explore their decision criteria.The results …

Strategic Geographic Positioning Of Sea Level Gauges To Aid In Early Detection Of Tsunamis In The Intra-Americas Sea, Joshua I. Henson

USF Tampa Graduate Theses and Dissertations

A tsunami is a series of large amplitude, shallow water waves generated by an event capable of displacing a massive volume of water. The displaced water propagates at speeds in excess of 800 kph until it dissipates or impacts a shoreline where it slows to 30 --

50 kph [NOAA and USGS Fact Sheet, 2005]. Earthquakes are the predominant tsunamigenic event, however, landslides, avalanches, submarine slumps or slides, volcanic eruptions, volcano flank failure, and meteor impact into an ocean can also cause a tsunami [McCann, 2004; O'Loughlin and Lander, 2003; Pararas-Carayannis, 2004]. This study includes past Caribbean tsunamigenic events assumed …

Growth Of 3c-Sic Via A Hot-Wall Cvd Reactor, Suzie Harvey

USF Tampa Graduate Theses and Dissertations

The heteroepitaxial growth of cubic silicon carbide (3C-SiC) on silicon (Si) substrates at high growth rates, via a horizontal hot-wall chemical vapor deposition (CVD) reactor, has been achieved. The final growth process was developed in three stages; an initial "baseline" development stage, an optimization stage, and a large area growth stage. In all cases the growth was conducted using a two step, carbonization plus growth, process. During carbonization, the surface of the Si is converted to 3C-SiC, which helps to minimize the stress in the growing crystal. Propane (C3H8) and silane (SiH4), diluted in hydrogen (H2), were used as the …

The Early Time Course Of Smoking Withdrawal Symptoms, Peter Schuyler Hendricks

USF Tampa Graduate Theses and Dissertations

Despite the large volume of research on tobacco withdrawal, the vast majority of studies have focused on the onset and remission of symptoms over the course of several days and weeks, with the earliest assessment periods occurring the day after cessation. To date, there has been no systematic study of the very early time course of the tobacco withdrawal syndrome, despite its obvious relevance to the maintenance of both smoking and postcessation abstinence. The published literature contains a range of estimates about the early appearance of withdrawal symptoms, but without reference to empirical data. The main objective of the current …

Evaluating The Reliability Of Continuous Resistivity Profiling To Detect Submarine Groundwater Discharge In A Shallow Marine Environment: Sarasota Bay, Florida, Arnell Harrison

USF Tampa Graduate Theses and Dissertations

Submarine groundwater discharge (SGD) can be an important pathway for nutrients entering coastal systems. However SGD flow paths can be difficult to identify and flow volumes difficult to quantify. This study assesses whether geophysical techniques are potentially cost effective methods for detecting the presence or lack of SGD within an estuary environment found in Sarasota Bay, Florida. In this area, a rapid increase in urbanization has led to increased nitrogen loading into the bay, with some 10% of this loading attributed to SGD. Discharging groundwater is expected to be fresher and hence higher resistivity, than "background" surface waters. Thus resistivity …

Improving Prostate Cancer Detection In Veterans Through The Development Of A Clinical Decision Rule For Prostate Biopsy, Owen T. Hill

USF Tampa Graduate Theses and Dissertations

In the U.S., the number of prostate biopsies increases annually. This is partly due to elevated prostate specific antigen (PSA) values identified during PC screening. This study's goal was improving prostate cancer (PC) detection through developing a clinical decision rule (CDR), based on an elevated PSA and laboratory biomarkers. This decision rule could be used after an elevated PSA, providing the patient and clinician information to consider prior to biopsy. This cross-sectional study evaluated men from the Tampa, Florida, James A. Haley (JH) VA (N=1,378), from January 1, 1998, through April 15, 2005. The study hypothesized that specific lab biomarkers …

Abrupt Climate Change During The Last Glacial Period: A Gulf Of Mexico Perspective, Heather W. Hill

USF Tampa Graduate Theses and Dissertations

Understanding the cause of abrupt climate change in the geologic past can help assess the potential magnitude and variability of future changes in regional and global climate. The research presented here focuses on some of the first records of hydrologic variability in the central North American continent during an interval of Marine Isotope Stage 3 (24-57 thousand years before present (ka)). Sediment core MD02-2551 from the Orca Basin, northern Gulf of Mexico, is used to document the first detailed melting history of the southern margin of the Laurentide Ice Sheet (LIS) during MIS 3, and to record terrestrial inputs from …

Ferrite-Ferroelectric Thin Films With Tunable Electrical And Magnetic Properties, Ranko Heindl

USF Tampa Graduate Theses and Dissertations

A growing need for developing new multi-functional materials operating at microwave frequencies is demanding a better understanding of ferroelectric and ferrimagnetic materials and their combinations. Some of these materials exhibit tunable physical properties, giving an extra degree of freedom in the device design. New multifunctional ferroelectric and ferrimagnetic thin film structures are investigated in this dissertation research, in which dielectric and magnetic properties can separately be tuned over a certain frequency range. The materials of choice, Ba0.5Sr0.5TiO3 (BST) and BaFe12O19 (BaM), both well studied and used in many microwave applications, were prepared using rf magnetron sputtering and pulsed laser ablation. …

West Tampa: Economic Development And Community Engagement Within An Urban Neighborhood, Jenna Holzberg

USF Tampa Graduate Theses and Dissertations

This thesis is a critical evaluation of the methods of community engagement used by the Hillsborough County City-County Planning Commission during the creation and implementation of the West Tampa Economic Development Plan. Data for this research was conducted in West Tampa, a neighborhood in Tampa, Florida. In the spring of 2005, the Planning Commission began working with the residents, business and property owners in West Tampa to develop the neighborhood's economic development plan. Using the community engagement methods of surveys, mailed and posted community announcements, community meetings, focus groups and interviews, the Planning Commission created an economic development plan which …

Brain-Compatible Research: Using Brain-Based Techniques To Positively Impact Student Learning, Laurie A. Herson

USF Tampa Graduate Theses and Dissertations

This thesis discusses brain-based methodology and how educators can use brain-based techniques to impact, support, and advance cognitive growth. Current research on learning and memory is enabling educators to better understand how the brain learns and what environmental factors assist in or detract from student learning. Brain-based learning techniques are considered by brain-based researchers as one way to create a learning environment that fosters student learning at individual academic levels while concurrently challenging each student and promoting academic growth. Teachers can further student academic advancement through the direct manipulation of the classroom environment rather than by purchasing a particular program …

Gold Mining In A Tropical Rainforest: Mercury Sorption To Soils In The Mining Region Of Arakaka-Matthew's Ridge, Guyana, Joniqua A'Ja Howard

USF Tampa Graduate Theses and Dissertations

Gold mining by artisinal (small-medium scale) miners causes an immense amount of damage to the environment (i.e. soil erosion, mobilization of heavy metals, etc.).1, 2 One of the most popular gold mining techniques employed by artisinal miners in Guyana is mercury amalgamation. During the amalgamation process approximately 300 metric tons/yr 11, 12 of mercury is used. Mercury once in the environment can be transported through the air, soil, and water column. It is estimated that 90-99% of total mercury (THg) is associated with the sediment. An understanding of the geochemical conditions that affect the fate of mercury in soils, which …

Development And Evaluation Of An Inertial Based Pavement Roughness Measuring System, Fengxuan Hu

USF Tampa Graduate Theses and Dissertations

Roughness is an important indicator of pavement riding comfort and safety. It is a condition indicator that should be carefully considered when evaluating primary pavements. At the same time, the use of roughness measurements plays a critical role in the pavement management system.There are many devices used for roughness evaluation. The major tools used for road roughness quantify are the road profilers. In the thesis research, in order to obtain useful pavement surface condition data for pavement evaluation, an inertial based pavement roughness measuring system was developed with the combination of modern sensor technology and computer technology. The research will …

The Karst Of West-Central Florida, Lee John Florea

USF Tampa Graduate Theses and Dissertations

Caves, the cornerstone feature of karst aquifers, are little understood in Florida. This dissertation, which analyzes the morphology, elevation, lithologic setting, and hydrology of caves in west-central Florida, demonstrates that the karst of the unconfined Floridan aquifer differs from the paradigm view of karst presented in modern geology textbooks. The differences reflect setting: eogenetic (west-central Florida) vs. telogenetic (conventional). Interpretations about the architecture of cavernous porosity in this dissertation come from detailed surveys (497 stations) of seven air-filled caves.The surveys reveal that solution cavities within the unconfined Floridan aquifer align along NE-SW and NW-SE fractures. The surveys further identify tabular …

The Influence Of The “Book Of Job” On The Middle English Morality Plays, Cameron Hunt-Logan

USF Tampa Graduate Theses and Dissertations

The Book of Job was extremely popular in the Middle Ages, especially in England, because of its role in liturgy as well as lay religious devotion. I argue that the Book of Job was heavily influential in the writing of the medieval morality plays Castle of Perseverance, Mankind, Wisdom, and Everyman. In the plays, the dramatists mirrored many of Job's structural and artistic elements, creating direct parallels between the Biblical text and the morality plays. The authors also relied on Job's ideological framework to establish their own arguments, forming not only a textual but ideological linkage. Yet the most intriguing …